From the announcement:
A brand new product from Wargame-model-mods: The Iso Containers
you get 4 containers and 4 housing. Laser cut buildings intended for 28mm scale table top wargames
The containers stack together as well as the housing
the containers can be placed into the housing at will and can be used separate.
Plenty of details and features. Each container has a hatch that can be open or close
Container dimensions are: